This item will be shipped within One Week Returns Subject to 15% restocking Fee UCFX09-28 Flange Unit Medium Duty 4 Bolt Ball Bearing Set Screw Locking 1 3/4" Inner Diameter UCFX09-28 Flange Unit Medium Duty 4 Bolt Ball Bearing, Bearing is high-grade cast iron, bearing is wide inner ring, relunricatable unit with anti-rotation pin, Standard seal is R-Seal.